John Overdeck Two Sigma Investments
John Overdeck is a co-founder of Two Sigma Investments, one of the world’s leading quantitative and technology-driven investment firms. Two Sigma applies data science, machine learning, and large-scale computing to markets across asset classes. Overdeck’s firm is a central reference point in discussions of modern systematic investing.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$1.84B |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$1.38B |
| 3 |
Apple
AAPL
|
+$1.31B |
| 4 |
Amazon
AMZN
|
+$1.14B |
| 5 |
Tesla
TSLA
|
+$966M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amgen
AMGN
|
+$224M |
| 2 |
VanEck Semiconductor ETF
SMH
|
+$216M |
| 3 |
Procter & Gamble
PG
|
+$215M |
| 4 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$212M |
| 5 |
Eaton
ETN
|
+$197M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 18.76% |
| 2 | Financials | 13.52% |
| 3 | Healthcare | 11.32% |
| 4 | Industrials | 11.3% |
| 5 | Consumer Discretionary | 10.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4276
ICL Group
ICL
$7.41B
| $124K | ﹤0.01% |
+24,000
| New | +$128K |
|
4277
Quanterix
QTRX
$132M
| $124K | ﹤0.01% |
35,185
-223,673
| -86% | -$1.31M |
|
4278
Kopin
KOPN
$887M
| $124K | ﹤0.01% |
54,892
-41,100
| -43% | -$99.5K |
|
4279
Crexendo
CXDO
$211M
| $123K | ﹤0.01% |
19,958
-38,848
| -66% | -$255K |
|
|
MPTI.RT
4280
DELISTED
M-tron Industries Rights (expiring April 15 2026)
MPTI.RT
| $122K | ﹤0.01% |
+57,858
| New | +$122K |
|
4281
Dawson Geophysical
DWSN
$98.1M
| $120K | ﹤0.01% |
34,616
-2,800
| -7% | -$7.75K |
|
4282
Crawford & Co Class A
CRD.A
$639M
| $119K | ﹤0.01% |
11,984
-2,509
| -17% | -$26.3K |
|
|
OGI
4283
Organigram Holdings
OGI
$178M
| $117K | ﹤0.01% |
86,970
-780,849
| -90% | -$1.16M |
|
4284
GrowGeneration
GRWG
$103M
| $115K | ﹤0.01% |
104,953
-149,778
| -59% | -$187K |
|
4285
electroCore
ECOR
$88.9M
| $115K | ﹤0.01% |
19,121
-300
| -2% | -$1.92K |
|
4286
Yext
YEXT
$651M
| $113K | ﹤0.01% |
29,467
+11,843
| +67% | +$71.3K |
|
4287
CALL
TripAdvisor
TRIP
$1.2B
| $113K | ﹤0.01% |
+10,600
| New | +$123K |
|
4288
Cytek Biosciences
CTKB
$567M
| $112K | ﹤0.01% |
25,600
-4,432
| -15% | -$20.9K |
|
4289
ReNew
RNW
$2.48B
| $112K | ﹤0.01% |
+24,400
| New | +$130K |
|
4290
Ceragon Networks
CRNT
$189M
| $111K | ﹤0.01% |
51,431
-9,441
| -16% | -$21.4K |
|
|
GURE
4291
Gulf Resources
GURE
$5.98M
| $110K | ﹤0.01% |
+17,583
| New | +$83.1K |
|
|
CCC
4292
CCC Intelligent Solutions
CCC
$4.39B
| $110K | ﹤0.01% |
+18,300
| New | +$120K |
|
4293
Humacyte
HUMA
$186M
| $108K | ﹤0.01% |
177,536
-1,313,931
| -88% | -$1.37M |
|
4294
AC Immune
ACIU
$286M
| $108K | ﹤0.01% |
39,091
-48,793
| -56% | -$152K |
|
4295
Pyxis Oncology
PYXS
$246M
| $107K | ﹤0.01% |
73,300
-32,228
| -31% | -$48.6K |
|
4296
CALL
Under Armour
UAA
$2.29B
| $105K | ﹤0.01% |
+17,700
| New | +$115K |
|
|
HEPS
4297
D-Market Electronic Services & Trading
HEPS
$986M
| $104K | ﹤0.01% |
39,738
+21,800
| +122% | +$59.5K |
|
|
ABX
4298
Abacus Global Management
ABX
$936M
| $104K | ﹤0.01% |
13,204
| – | – |
|
4299
The Honest Company
HNST
$559M
| $102K | ﹤0.01% |
+34,700
| New | +$89.3K |
|
|
OKUR
4300
OnKure Therapeutics
OKUR
$162M
| $100K | ﹤0.01% |
24,262
+12,942
| +114% | +$40K |
|
Similar funds
John Overdeck's Q1 2026 Portfolio in Review
As of Q1 2026, John Overdeck held 5,070 positions worth $124B, up 75% from $70.9B the previous quarter. Its ten largest holdings account for 9.4% of the portfolio.
John Overdeck deployed $54.2B of net new capital in Q1 2026, opening 1,038 new positions and adding to 2,050 existing holdings. Its largest new stake was Broadcom: 2,225,253 shares worth $689M.
By sector, the portfolio is most concentrated in Technology at 19% of assets, up from 16% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was Amgen, an estimated $224M trimmed.
- John Overdeck's largest Q1 2026 buy was Broadcom: 2,225,253 shares worth $689M.
- John Overdeck added most to NVIDIA in Q1 2026, an estimated $1.84B increase.
- John Overdeck's biggest Q1 2026 reduction was Amgen, cutting an estimated $224M.
- John Overdeck fully exited First Trust Dow Jones Internet Index Fund ETF in Q1 2026, selling an estimated $82.2M.
- John Overdeck's ten largest holdings make up 9.4% of its $124B portfolio in Q1 2026.
- John Overdeck opened 1,038 new positions and closed 524 in Q1 2026.
- John Overdeck's portfolio value rose 75% quarter-over-quarter to $124B.
Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.